| 1 | /* $Id: RTMpGetDescription-generic.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - Multiprocessor, Generic RTMpGetDescription.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2009-2019 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 |
|
|---|
| 28 | /*********************************************************************************************************************************
|
|---|
| 29 | * Header Files *
|
|---|
| 30 | *********************************************************************************************************************************/
|
|---|
| 31 | #include <iprt/mp.h>
|
|---|
| 32 | #include "internal/iprt.h"
|
|---|
| 33 | #if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
|
|---|
| 34 | # include <iprt/asm-amd64-x86.h>
|
|---|
| 35 | #endif
|
|---|
| 36 | #include <iprt/err.h>
|
|---|
| 37 | #include <iprt/string.h>
|
|---|
| 38 |
|
|---|
| 39 |
|
|---|
| 40 |
|
|---|
| 41 | /**
|
|---|
| 42 | * Returns "Unknown" as description.
|
|---|
| 43 | *
|
|---|
| 44 | * @returns VERR_BUFFER_OVERFLOW or VINF_SUCCESS.
|
|---|
| 45 | * @param pszBuf Output buffer.
|
|---|
| 46 | * @param cbBuf Buffer size.
|
|---|
| 47 | */
|
|---|
| 48 | static int rtMpGetDescriptionUnknown(char *pszBuf, size_t cbBuf)
|
|---|
| 49 | {
|
|---|
| 50 | static const char s_szUnknown[] = "Unknown";
|
|---|
| 51 | if (cbBuf < sizeof(s_szUnknown))
|
|---|
| 52 | return VERR_BUFFER_OVERFLOW;
|
|---|
| 53 | memcpy(pszBuf, s_szUnknown, sizeof(s_szUnknown));
|
|---|
| 54 | return VINF_SUCCESS;
|
|---|
| 55 | }
|
|---|
| 56 |
|
|---|
| 57 |
|
|---|
| 58 | RTDECL(int) RTMpGetDescription(RTCPUID idCpu, char *pszBuf, size_t cbBuf)
|
|---|
| 59 | {
|
|---|
| 60 | /*
|
|---|
| 61 | * Check that the specified cpu is valid & online.
|
|---|
| 62 | */
|
|---|
| 63 | if (idCpu != NIL_RTCPUID && !RTMpIsCpuOnline(idCpu))
|
|---|
| 64 | return RTMpIsCpuPossible(idCpu)
|
|---|
| 65 | ? VERR_CPU_OFFLINE
|
|---|
| 66 | : VERR_CPU_NOT_FOUND;
|
|---|
| 67 |
|
|---|
| 68 | /*
|
|---|
| 69 | * Construct the description string in a temporary buffer.
|
|---|
| 70 | */
|
|---|
| 71 | char szString[4*4*3+1];
|
|---|
| 72 | RT_ZERO(szString);
|
|---|
| 73 | #if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
|
|---|
| 74 | if (!ASMHasCpuId())
|
|---|
| 75 | return rtMpGetDescriptionUnknown(pszBuf, cbBuf);
|
|---|
| 76 |
|
|---|
| 77 | uint32_t uMax;
|
|---|
| 78 | uint32_t uEBX, uECX, uEDX;
|
|---|
| 79 | ASMCpuId(0x80000000, &uMax, &uEBX, &uECX, &uEDX);
|
|---|
| 80 | if (uMax >= 0x80000002)
|
|---|
| 81 | {
|
|---|
| 82 | ASMCpuId(0x80000002, &szString[0 + 0], &szString[0 + 4], &szString[0 + 8], &szString[0 + 12]);
|
|---|
| 83 | if (uMax >= 0x80000003)
|
|---|
| 84 | ASMCpuId(0x80000003, &szString[16 + 0], &szString[16 + 4], &szString[16 + 8], &szString[16 + 12]);
|
|---|
| 85 | if (uMax >= 0x80000004)
|
|---|
| 86 | ASMCpuId(0x80000004, &szString[32 + 0], &szString[32 + 4], &szString[32 + 8], &szString[32 + 12]);
|
|---|
| 87 | }
|
|---|
| 88 | else
|
|---|
| 89 | {
|
|---|
| 90 | ASMCpuId(0x00000000, &uMax, &uEBX, &uECX, &uEDX);
|
|---|
| 91 | ((uint32_t *)&szString[0])[0] = uEBX;
|
|---|
| 92 | ((uint32_t *)&szString[0])[1] = uEDX;
|
|---|
| 93 | ((uint32_t *)&szString[0])[2] = uECX;
|
|---|
| 94 | }
|
|---|
| 95 |
|
|---|
| 96 | #else
|
|---|
| 97 | # error "PORTME or use RTMpGetDescription-generic-stub.cpp."
|
|---|
| 98 | #endif
|
|---|
| 99 |
|
|---|
| 100 | /*
|
|---|
| 101 | * Copy it out into the buffer supplied by the caller.
|
|---|
| 102 | */
|
|---|
| 103 | char *pszSrc = RTStrStrip(szString);
|
|---|
| 104 | size_t cchSrc = strlen(pszSrc);
|
|---|
| 105 | if (cchSrc >= cbBuf)
|
|---|
| 106 | return VERR_BUFFER_OVERFLOW;
|
|---|
| 107 | memcpy(pszBuf, pszSrc, cchSrc + 1);
|
|---|
| 108 | return VINF_SUCCESS;
|
|---|
| 109 | }
|
|---|
| 110 | RT_EXPORT_SYMBOL(RTMpGetDescription);
|
|---|
| 111 |
|
|---|
